US20110149998A1 - Method and system for timestamp inclusion in virtual local area network tag - Google Patents
Method and system for timestamp inclusion in virtual local area network tag Download PDFInfo
- Publication number
- US20110149998A1 US20110149998A1 US12/640,497 US64049709A US2011149998A1 US 20110149998 A1 US20110149998 A1 US 20110149998A1 US 64049709 A US64049709 A US 64049709A US 2011149998 A1 US2011149998 A1 US 2011149998A1
- Authority
- US
- United States
- Prior art keywords
- data frame
- ethernet data
- frame
- time
- field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 201000006292 polyarteritis nodosa Diseases 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
- H04J3/0697—Synchronisation in a packet node
Definitions
- the present invention relates generally to a network communications and more specifically to a method and system for time-stamping an Ethernet packet and re-associating the timestamp to the packet being timed.
- the current proposal from 802.1 as is to have a time stamp recorded in 802.3 station management for selected packets. However, how these packets are to be designated for time stamping is yet to be revealed.
- the association of the time stamp data and the packet is a complex post-processing task as bit-stuffing is generally considered to be an undesirable approach in high speed networks.
- the present invention advantageously provides a method and system for time stamping an Ethernet data frame.
- a value of a real time clock is captured when an Ethernet data frame is detected for transmission and timestamp header is inserted into the Ethernet data frame.
- the captured real time value is appended to the Ethernet data frame.
- a method for time-stamping a data frame.
- the data frame includes a type field and data for transmission to a communication network.
- the data frame is received and a reception time for the data frame is determined.
- the value of the type field is determined. If the value of the type field indicates the data frame is a time-stamped frame, a timestamp field is inserted in the data frame.
- the timestamp field indicates the reception time.
- an apparatus for time-stamping an Ethernet data frame includes a reconciliation sublayer, a real time clock and a start frame delimiter.
- the Ethernet data frame includes a type field and data for transmission to a communication network.
- the reconciliation sublayer is operable to receive the Ethernet data frame.
- the real time clock is operable to determine a reception time for the Ethernet data frame.
- the start frame delimiter detector is communicatively coupled to the reconciliation sublayer and the real time clock. The start frame delimiter detector is operable to determine a value of the type field and if the value of the type field indicates the data frame is a time-stamped frame, insert a timestamp field in the Ethernet data frame. The timestamp field indicates the reception time.
- a system for time-stamping an Ethernet data frame includes a routing controller.
- the Ethernet data frame includes data for transmission.
- the routing controller is operable to receive the Ethernet data frame and determine a reception time for the Ethernet data frame and a value of the type field. If the value of the type field indicates the data frame is a time-stamped frame, the routing controller is further operable to insert a timestamp field in the Ethernet data frame. The timestamp field indicates the reception time.
- FIG. 1 is a block diagram of an exemplary Ethernet communication system constructed in accordance with the principles of the present invention
- FIG. 2 is a block diagram of a client computer constructed in accordance with the principles of the present invention.
- FIG. 3 is a block diagram illustrating an exemplary Ethernet frame structure for time-stamping the Ethernet data frame according to the principles of the present invention
- FIG. 4 is a flow chart of an exemplary time-stamping process according to the principles of the present invention.
- FIG. 5 is an exemplary Ethernet data frame to be time-stamped according to the principles of the present invention.
- FIG. 6 is an exemplary time-stamped data frame constructed in accordance with the principles of the present invention.
- relational terms such as “first” and “second,” “top” and “bottom,” and the like, may be used solely to distinguish one entity or element from another entity or element without necessarily requiring or implying any physical or logical relationship or order between such entities or elements.
- One embodiment of the present invention advantageously provides a method and system for time-stamping an Ethernet packet and re-associating the timestamp to the packet being timed.
- System 10 includes a first client computer 12 a communicating with a second client computer 12 b over a wide area network (“WAN”) 16 .
- Client computers 12 a and 12 b are referred to collectively herein as “client computer 12 .”
- the wide area network 16 may include the Internet, intranet, or other communication network.
- Client computers 12 may include personal computers, laptops, personal data assistants (“PDAs”), servers, mobile telephones, etc.
- PDAs personal data assistants
- Each client computer 12 transmits data through a WAN 16 via a WAN interface 18 a , 18 b (referenced collectively as “WAN interface 18 ”).
- WAN interface 18 the communication network is pictured in FIG.
- FIG. 1 shows two client computers 12 , this configuration is for exemplary purposes only.
- the system 10 may include multiple WAN interfaces 18 .
- the WAN interface 18 can be implemented in or be in communication with various types of client devices, such as routers, switches, bridges, etc.
- the WAN interface 18 may be a stand-alone device or may be embedded as part of another resource, such as the client computer 12 .
- an exemplary client computer 12 may include a communication interface 20 communicatively coupled to a controller 22 .
- the communication interface 20 may be wired, wireless, or any combination thereof.
- the communication interface 22 transfers data packets between the configuration manager 20 and the network nodes 12 using, at least, IEEE communication protocol 802.8, i.e. “Ethernet.”
- the controller 22 controls the processing of information and the operation of the client computer 12 in a well-known manner.
- the controller 22 is also coupled to an input/output interface 24 and a memory 26 .
- the input/output interface 24 controls the reception and presentation of information to and from a user through various well-known peripheral devices such as a display screen, a keyboard, a mouse, a printer, etc.
- the memory 26 may be volatile or non-volatile.
- the memory 26 includes a data memory 28 and a program memory 30 .
- the program memory 30 contains a routing controller 32 and a Media Access Control (“MAC”) client application 34 , such as an 802.1 as application, the operation and interaction of which is discussed in more detail below.
- MAC Media Access Control
- the data memory 28 stores various data files, such an Ethernet data frame 36 which is prepared and transmitted for routing through the network 10 by the routing controller 32 .
- the client computer 12 may also include a real time clock 38 used to maintain a reference time signal.
- the client computer 12 may include a means for periodically receiving updates to adjust a clock in order to maintain a reference timeframe accurate to within a few microseconds, e.g., receiving updates through a Global Positioning System (“GPS”) receiver 40 from a satellite having an atomic clock that maintains a continuous and stable time scale such as the International Atomic Time (“TAI”). Aside from getting a reference from a satellite, the reference can be distributed through the links that make up the network 10 from a master clock source.
- GPS Global Positioning System
- TAI International Atomic Time
- the Ethernet frame structure 42 is a combination of the MAC layer 44 , i.e. a Layer 2 sublayer, and the physical layer 46 , i.e., Layer 1, of the commonly known seven layer Open System Interconnection (“OSI”) reference model.
- the MAC layer 44 includes a logical link control (“LLC”) or other MAC client sublayer 48 , a MAC Control sublayer 50 and a MAC sublayer 52 .
- the MAC sublayer 52 is an 802.3 MAC that supports time stamping.
- the physical layer 46 includes a reconciliation sublayer 54 , a media independent interface 56 , a physical sublayer 58 and a medium dependent interface 60 .
- the operation of the Ethernet frame structure 42 is commonly known in the art.
- FIG. 4 an exemplary operational flowchart is provided that describes the process performed by the routing controller 32 to time-stamp an Ethernet data frame 36 by entering a time-stamp header tag into the data frame 36 .
- An exemplary Ethernet data frame 36 indicating a header tag 62 insertion point is shown in FIG. 5 .
- MAC client application 34 signals this request by appending a special time-stamp header tag 62 in front of the conventional EtherType field 64 (step S 102 ).
- the time-stamp header tag 62 indicates that the Ethernet data frame 36 is to be time-stamped.
- Time-stamp header tag 62 includes a Type/Control field 66 (“TType”) and a Length field 68 .
- a special start frame delimiter (“SFD”) detector 74 captures the value of the real time clock 38 when the frame, e.g., the frame preamble, is detected (step S 106 ).
- the SFD detector 74 counts the passage of 12 octets (step S 108 ), i.e., the addresses, and examines the value of the EtherType field 64 (step S 110 ). If the EtherType value is anything other than a “Time Stamp” TType (step S 112 ), the captured value is discarded (step S 114 ) and the logic is reset to wait for the next packet.
- the EtherType value is the “Time Stamp” TType (step S 112 )
- a trailer timestamp tag process is initiated.
- the captured real time clock value is used to formulate the value of the timestamp tag 70 (step S 116 ).
- the value of the Length field 68 is precisely determined as the octet count at which the trailer timestamp tag 70 is to be added to the end of the data stream 72 (step S 118 ).
- FIG. 6 illustrates an Ethernet data frame 36 which has been time stamped in accordance with the principles of the present invention.
- the TType field 66 in header tag 62 identifies the data frame 36 as including a timestamp field 70 and the value of Length field 68 precisely identifies the location of the timestamp field 70 within the Ethernet data frame 36 .
- the timestamp field 70 may be located after the data field 72 and any optional or needed padding.
- Complete Time Stamping also uses a complementary process in the receiving MAC client 34 in which a similar detection mechanism is used on the receive side.
- the complimentary process may append a second trailer timestamp tag 70 to the Ethernet data frame 36 having the receive side time stamp upon reception.
- the requesting MAC client recognizes that the Ethernet data frame 36 includes a “Time Stamp” TType, count the number of octets from the end of the Length field 68 to the timestamp tag 70 that is indicated by the value of the length field 68 , and retrieve the timestamp tag 70 value at the designated location. It is foreseeable that the length value may not be limited to octets and may be expressed in any other data count denomination, such as bits or bytes.
- the present invention can be realized in hardware, software, or a combination of hardware and software. Any kind of computing system, or other apparatus adapted for carrying out the methods described herein, is suited to perform the functions described herein.
- a typical combination of hardware and software could be a specialized or general purpose computer system having one or more processing elements and a computer program stored on a storage medium that, when loaded and executed, controls the computer system such that it carries out the methods described herein.
- the present invention can also be embedded in a computer program product, which comprises all the features enabling the implementation of the methods described herein, and which, when loaded in a computing system is able to carry out these methods.
- Storage medium refers to any volatile or non-volatile storage device.
- Computer program or application in the present context means any expression, in any language, code or notation, of a set of instructions intended to cause a system having an information processing capability to perform a particular function either directly or after either or both of the following a) conversion to another language, code or notation; b) reproduction in a different material form.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
- n/a
- n/a
- The present invention relates generally to a network communications and more specifically to a method and system for time-stamping an Ethernet packet and re-associating the timestamp to the packet being timed.
- Currently, discussions are underway within the Institute of Electrical and Electronics Engineers (“IEEE”) to determine a new Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks standard for broadband communication, denoted as 802.1 as. As a result of these discussions, one of the issues presented to the physical layer of Ethernet defined according to IEEE standard 802.3 is how to the support time stamping requirements required under 802.1 as.
- The current proposal from 802.1 as is to have a time stamp recorded in 802.3 station management for selected packets. However, how these packets are to be designated for time stamping is yet to be revealed. The current proposal under 802.1 as splits the timestamp from the actual packet being time stamped. The split produces significant problems with respect to re-associating the timestamp to the packet being timed. The association of the time stamp data and the packet is a complex post-processing task as bit-stuffing is generally considered to be an undesirable approach in high speed networks.
- Therefore, what is needed is a system and method for time-stamping an Ethernet packet and re-associating the timestamp to the packet being timed.
- The present invention advantageously provides a method and system for time stamping an Ethernet data frame. Generally, a value of a real time clock is captured when an Ethernet data frame is detected for transmission and timestamp header is inserted into the Ethernet data frame. Upon determining that the timestamp header includes a Time Stamp TType, the captured real time value is appended to the Ethernet data frame.
- In accordance with one aspect of the present invention, a method is provided for time-stamping a data frame. The data frame includes a type field and data for transmission to a communication network. The data frame is received and a reception time for the data frame is determined. The value of the type field is determined. If the value of the type field indicates the data frame is a time-stamped frame, a timestamp field is inserted in the data frame. The timestamp field indicates the reception time.
- In accordance with another aspect of the present invention, an apparatus for time-stamping an Ethernet data frame includes a reconciliation sublayer, a real time clock and a start frame delimiter. The Ethernet data frame includes a type field and data for transmission to a communication network. The reconciliation sublayer is operable to receive the Ethernet data frame. The real time clock is operable to determine a reception time for the Ethernet data frame. The start frame delimiter detector is communicatively coupled to the reconciliation sublayer and the real time clock. The start frame delimiter detector is operable to determine a value of the type field and if the value of the type field indicates the data frame is a time-stamped frame, insert a timestamp field in the Ethernet data frame. The timestamp field indicates the reception time.
- In accordance with yet another aspect of the present invention, a system for time-stamping an Ethernet data frame includes a routing controller. The Ethernet data frame includes data for transmission. The routing controller is operable to receive the Ethernet data frame and determine a reception time for the Ethernet data frame and a value of the type field. If the value of the type field indicates the data frame is a time-stamped frame, the routing controller is further operable to insert a timestamp field in the Ethernet data frame. The timestamp field indicates the reception time.
- A more complete understanding of the present invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
-
FIG. 1 is a block diagram of an exemplary Ethernet communication system constructed in accordance with the principles of the present invention; -
FIG. 2 is a block diagram of a client computer constructed in accordance with the principles of the present invention; -
FIG. 3 is a block diagram illustrating an exemplary Ethernet frame structure for time-stamping the Ethernet data frame according to the principles of the present invention; -
FIG. 4 is a flow chart of an exemplary time-stamping process according to the principles of the present invention; -
FIG. 5 is an exemplary Ethernet data frame to be time-stamped according to the principles of the present invention; and -
FIG. 6 is an exemplary time-stamped data frame constructed in accordance with the principles of the present invention. - Before describing in detail exemplary embodiments that are in accordance with the present invention, it is noted that the embodiments reside primarily in combinations of apparatus components and processing steps related to implementing a system and method for time-stamping an Ethernet packet and re-associating the timestamp to the packet being timed. Accordingly, the system and method components have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.
- As used herein, relational terms, such as “first” and “second,” “top” and “bottom,” and the like, may be used solely to distinguish one entity or element from another entity or element without necessarily requiring or implying any physical or logical relationship or order between such entities or elements.
- One embodiment of the present invention advantageously provides a method and system for time-stamping an Ethernet packet and re-associating the timestamp to the packet being timed.
- Referring now to the drawing figures in which like reference designators refer to like elements, there is shown in
FIG. 1 an exemplary network communication system 10. System 10 includes afirst client computer 12 a communicating with asecond client computer 12 b over a wide area network (“WAN”) 16.Client computers client computer 12.” Thewide area network 16 may include the Internet, intranet, or other communication network.Client computers 12 may include personal computers, laptops, personal data assistants (“PDAs”), servers, mobile telephones, etc. Eachclient computer 12 transmits data through aWAN 16 via aWAN interface FIG. 1 as being a WAN, the principles of the present invention may also apply to other forms of communication networks, such as personal area networks (“PANs”), local area networks (“LANs”), campus area networks (“CANs”), metropolitan area networks (“MANs”), etc. Additionally, althoughFIG. 1 shows twoclient computers 12, this configuration is for exemplary purposes only. For example, the system 10 may include multiple WAN interfaces 18. The WAN interface 18 can be implemented in or be in communication with various types of client devices, such as routers, switches, bridges, etc. Additionally, the WAN interface 18 may be a stand-alone device or may be embedded as part of another resource, such as theclient computer 12. - Referring now to
FIG. 2 , anexemplary client computer 12 may include acommunication interface 20 communicatively coupled to acontroller 22. Thecommunication interface 20 may be wired, wireless, or any combination thereof. Thecommunication interface 22 transfers data packets between theconfiguration manager 20 and thenetwork nodes 12 using, at least, IEEE communication protocol 802.8, i.e. “Ethernet.” Thecontroller 22 controls the processing of information and the operation of theclient computer 12 in a well-known manner. Thecontroller 22 is also coupled to an input/output interface 24 and amemory 26. The input/output interface 24 controls the reception and presentation of information to and from a user through various well-known peripheral devices such as a display screen, a keyboard, a mouse, a printer, etc. - The
memory 26 may be volatile or non-volatile. Thememory 26 includes adata memory 28 and aprogram memory 30. Theprogram memory 30 contains arouting controller 32 and a Media Access Control (“MAC”)client application 34, such as an 802.1 as application, the operation and interaction of which is discussed in more detail below. It should be noted that therouting controller 32 and/orMAC client 34 may be also embedded within the WAN interface 18 or other router, switch, or bridge (not shown). Thedata memory 28 stores various data files, such anEthernet data frame 36 which is prepared and transmitted for routing through the network 10 by therouting controller 32. Theclient computer 12 may also include areal time clock 38 used to maintain a reference time signal. Alternatively, theclient computer 12 may include a means for periodically receiving updates to adjust a clock in order to maintain a reference timeframe accurate to within a few microseconds, e.g., receiving updates through a Global Positioning System (“GPS”)receiver 40 from a satellite having an atomic clock that maintains a continuous and stable time scale such as the International Atomic Time (“TAI”). Aside from getting a reference from a satellite, the reference can be distributed through the links that make up the network 10 from a master clock source. - Referring now to
FIG. 3 , a diagram is provided which illustrates an exemplaryEthernet frame structure 42 used in the operation of anexemplary routing controller 32. TheEthernet frame structure 42 is a combination of theMAC layer 44, i.e. a Layer 2 sublayer, and thephysical layer 46, i.e., Layer 1, of the commonly known seven layer Open System Interconnection (“OSI”) reference model. TheMAC layer 44 includes a logical link control (“LLC”) or otherMAC client sublayer 48, aMAC Control sublayer 50 and aMAC sublayer 52. In one embodiment of the present invention, theMAC sublayer 52 is an 802.3 MAC that supports time stamping. Thephysical layer 46 includes areconciliation sublayer 54, amedia independent interface 56, aphysical sublayer 58 and a mediumdependent interface 60. The operation of theEthernet frame structure 42 is commonly known in the art. - Referring now to
FIG. 4 , an exemplary operational flowchart is provided that describes the process performed by therouting controller 32 to time-stamp anEthernet data frame 36 by entering a time-stamp header tag into thedata frame 36. An exemplaryEthernet data frame 36 indicating aheader tag 62 insertion point is shown inFIG. 5 . When aMAC client application 34 is to generate time stamp information for aparticular data frame 36,MAC client application 34 signals this request by appending a special time-stamp header tag 62 in front of the conventional EtherType field 64 (step S102). The time-stamp header tag 62 indicates that theEthernet data frame 36 is to be time-stamped. Time-stamp header tag 62 includes a Type/Control field 66 (“TType”) and aLength field 68. - When a
packet 36 passes through thereconciliation sublayer 54 as it is being transmitted by the MAC sublayer 52 (step S104), a special start frame delimiter (“SFD”) detector 74 captures the value of thereal time clock 38 when the frame, e.g., the frame preamble, is detected (step S106). The SFD detector 74 counts the passage of 12 octets (step S108), i.e., the addresses, and examines the value of the EtherType field 64 (step S110). If the EtherType value is anything other than a “Time Stamp” TType (step S112), the captured value is discarded (step S114) and the logic is reset to wait for the next packet. However, if the EtherType value is the “Time Stamp” TType (step S112), a trailer timestamp tag process is initiated. The captured real time clock value is used to formulate the value of the timestamp tag 70 (step S116). The value of theLength field 68 is precisely determined as the octet count at which thetrailer timestamp tag 70 is to be added to the end of the data stream 72 (step S118). -
FIG. 6 illustrates anEthernet data frame 36 which has been time stamped in accordance with the principles of the present invention. TheTType field 66 inheader tag 62 identifies thedata frame 36 as including atimestamp field 70 and the value ofLength field 68 precisely identifies the location of thetimestamp field 70 within theEthernet data frame 36. Thetimestamp field 70 may be located after thedata field 72 and any optional or needed padding. - It is noted that two different variants of the above step may be applied to cover the two different cases of MAC transmission, i.e. (a) where a cyclic redundancy check (“CRC”) is generated in MAC transmit hardware and (b) where the CRC is handed down within the frame structure from the
MAC Client 48. - It is also noted that complete Time Stamping also uses a complementary process in the receiving
MAC client 34 in which a similar detection mechanism is used on the receive side. The complimentary process may append a secondtrailer timestamp tag 70 to theEthernet data frame 36 having the receive side time stamp upon reception. - To retrieve the timestamp, the requesting MAC client recognizes that the
Ethernet data frame 36 includes a “Time Stamp” TType, count the number of octets from the end of theLength field 68 to thetimestamp tag 70 that is indicated by the value of thelength field 68, and retrieve thetimestamp tag 70 value at the designated location. It is foreseeable that the length value may not be limited to octets and may be expressed in any other data count denomination, such as bits or bytes. - The present invention can be realized in hardware, software, or a combination of hardware and software. Any kind of computing system, or other apparatus adapted for carrying out the methods described herein, is suited to perform the functions described herein.
- A typical combination of hardware and software could be a specialized or general purpose computer system having one or more processing elements and a computer program stored on a storage medium that, when loaded and executed, controls the computer system such that it carries out the methods described herein. The present invention can also be embedded in a computer program product, which comprises all the features enabling the implementation of the methods described herein, and which, when loaded in a computing system is able to carry out these methods. Storage medium refers to any volatile or non-volatile storage device.
- Computer program or application in the present context means any expression, in any language, code or notation, of a set of instructions intended to cause a system having an information processing capability to perform a particular function either directly or after either or both of the following a) conversion to another language, code or notation; b) reproduction in a different material form.
- In addition, unless mention was made above to the contrary, it should be noted that all of the accompanying drawings are not to scale. Significantly, this invention can be embodied in other specific forms without departing from the spirit or essential attributes thereof, and accordingly, reference should be had to the following claims, rather than to the foregoing specification, as indicating the scope of the invention.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/640,497 US8804762B2 (en) | 2009-12-17 | 2009-12-17 | Method and system for timestamp inclusion in virtual local area network tag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/640,497 US8804762B2 (en) | 2009-12-17 | 2009-12-17 | Method and system for timestamp inclusion in virtual local area network tag |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110149998A1 true US20110149998A1 (en) | 2011-06-23 |
US8804762B2 US8804762B2 (en) | 2014-08-12 |
Family
ID=44151009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/640,497 Active 2032-04-15 US8804762B2 (en) | 2009-12-17 | 2009-12-17 | Method and system for timestamp inclusion in virtual local area network tag |
Country Status (1)
Country | Link |
---|---|
US (1) | US8804762B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140226683A1 (en) * | 2013-02-14 | 2014-08-14 | Silicom Ltd. | Network adapter with high performance in-line timestamp |
CN104079400A (en) * | 2013-03-27 | 2014-10-01 | 美国博通公司 | Timestamping data packets |
US9054967B1 (en) * | 2012-09-18 | 2015-06-09 | Cisco Technology, Inc. | Timestamping packets in a network |
US9264404B1 (en) * | 2012-08-15 | 2016-02-16 | Marvell International Ltd. | Encrypting data using time stamps |
US20180191802A1 (en) * | 2017-01-03 | 2018-07-05 | Globalfoundries Inc. | Nanosecond accuracy under precision time protocol for ethernet by using high accuracy timestamp assist device |
WO2023245962A1 (en) * | 2022-06-24 | 2023-12-28 | 华为技术有限公司 | Sensing method and apparatus |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9288128B1 (en) * | 2013-03-15 | 2016-03-15 | Google Inc. | Embedding network measurements within multiplexing session layers |
US20150189097A1 (en) * | 2013-12-31 | 2015-07-02 | Alcatel-Lucent Usa Inc. | Vectored charging data record (cdr) reconciliation |
US10541770B2 (en) | 2017-02-06 | 2020-01-21 | Valens Semiconductor Ltd. | Efficient recovery of lost packets using double parity forward error correction |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040071469A1 (en) * | 2001-10-10 | 2004-04-15 | Mcnc | Optical-inclusive dWDM local area network |
US20050152406A2 (en) * | 2003-10-03 | 2005-07-14 | Chauveau Claude J. | Method and apparatus for measuring network timing and latency |
US20090190613A1 (en) * | 2008-01-25 | 2009-07-30 | Finn Norman W | Supporting efficient and accurate sync/followup timestamps |
US20100183021A1 (en) * | 2002-06-26 | 2010-07-22 | Arris Group, Inc. | Method and Apparatus for Queuing Data Flows |
US20100223399A1 (en) * | 2009-02-27 | 2010-09-02 | Electronics And Telecommunications Research Institute | Method and apparatus for processing timestamp using signature information on physical layer |
US8166216B1 (en) * | 2006-12-29 | 2012-04-24 | Marvell International Ltd. | Floating frame timing circuits for network devices |
-
2009
- 2009-12-17 US US12/640,497 patent/US8804762B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040071469A1 (en) * | 2001-10-10 | 2004-04-15 | Mcnc | Optical-inclusive dWDM local area network |
US20100183021A1 (en) * | 2002-06-26 | 2010-07-22 | Arris Group, Inc. | Method and Apparatus for Queuing Data Flows |
US20050152406A2 (en) * | 2003-10-03 | 2005-07-14 | Chauveau Claude J. | Method and apparatus for measuring network timing and latency |
US8166216B1 (en) * | 2006-12-29 | 2012-04-24 | Marvell International Ltd. | Floating frame timing circuits for network devices |
US20090190613A1 (en) * | 2008-01-25 | 2009-07-30 | Finn Norman W | Supporting efficient and accurate sync/followup timestamps |
US20100223399A1 (en) * | 2009-02-27 | 2010-09-02 | Electronics And Telecommunications Research Institute | Method and apparatus for processing timestamp using signature information on physical layer |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9264404B1 (en) * | 2012-08-15 | 2016-02-16 | Marvell International Ltd. | Encrypting data using time stamps |
US9054967B1 (en) * | 2012-09-18 | 2015-06-09 | Cisco Technology, Inc. | Timestamping packets in a network |
US20150236933A1 (en) * | 2012-09-18 | 2015-08-20 | Cisco Technology, Inc. | Timestamping Packets in a Network |
US9641409B2 (en) * | 2012-09-18 | 2017-05-02 | Cisco Technology, Inc. | Timestamping packets in a network |
USRE49806E1 (en) * | 2012-09-18 | 2024-01-16 | Cisco Technology, Inc. | Timestamping packets in a network |
US20140226683A1 (en) * | 2013-02-14 | 2014-08-14 | Silicom Ltd. | Network adapter with high performance in-line timestamp |
CN104079400A (en) * | 2013-03-27 | 2014-10-01 | 美国博通公司 | Timestamping data packets |
US20180191802A1 (en) * | 2017-01-03 | 2018-07-05 | Globalfoundries Inc. | Nanosecond accuracy under precision time protocol for ethernet by using high accuracy timestamp assist device |
US10104148B2 (en) * | 2017-01-03 | 2018-10-16 | Globalfoundries Inc. | Nanosecond accuracy under precision time protocol for ethernet by using high accuracy timestamp assist device |
TWI651983B (en) * | 2017-01-03 | 2019-02-21 | 美商格羅方德半導體公司 | Nanosecond accuracy under precision time protocol for ethernet by using high accuracy timestamp assist device |
WO2023245962A1 (en) * | 2022-06-24 | 2023-12-28 | 华为技术有限公司 | Sensing method and apparatus |
Also Published As
Publication number | Publication date |
---|---|
US8804762B2 (en) | 2014-08-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8804762B2 (en) | Method and system for timestamp inclusion in virtual local area network tag | |
US10887211B2 (en) | Indirect packet classification timestamping system and method | |
US9882666B2 (en) | Time synchronization for network testing equipment | |
US8730867B2 (en) | Clock synchronization aid device for communication station(s) of a wireless network, and associated clock synchronization device | |
US8023976B2 (en) | Method and system for accurate clock synchronization for communication networks | |
US7643465B2 (en) | Method for insertion of time stamp into real time data within a wireless communications network | |
EP2062399B1 (en) | Method and apparatus for transmitting transport stream packets | |
EP1596547A2 (en) | Method for constructing and processing a frame in synchronous ethernet | |
EP2997485B1 (en) | Media time based usb frame counter synchronization for wi-fi serial bus | |
US8351437B2 (en) | Stereo bit clock tuning | |
WO2008035863A1 (en) | Method and apparatus for synchronizing applications of terminals in communication network | |
US8149880B1 (en) | Media streaming synchronization | |
US20140369222A1 (en) | Method for estimating network jitter in apparatus for transmitting coded media data | |
JP2008527894A (en) | Method for synchronizing receiver clock to transmitter clock in less than 100 nanoseconds | |
WO2017177751A1 (en) | Time synchronization method and apparatus | |
US20020021717A1 (en) | Method and system for transmit time stamp insertion in a hardware time stamp system for packetized data networks | |
JP5041815B2 (en) | Communication apparatus and base station system | |
Schüngel et al. | Single message distribution of timing information for time synchronization in converged wired and wireless networks | |
US20230388252A1 (en) | Providing high assurance of end-to-end cpri circuit in a high jitter packet based fronthaul network |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AVAYA INC., NEW JERSEY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:THOMPSON, GEOFFREY O.;REEL/FRAME:025200/0265 Effective date: 20101022 |
|
AS | Assignment |
Owner name: BANK OF NEW YORK MELLON TRUST, NA, AS NOTES COLLATERAL AGENT, THE, PENNSYLVANIA Free format text: SECURITY AGREEMENT;ASSIGNOR:AVAYA INC., A DELAWARE CORPORATION;REEL/FRAME:025863/0535 Effective date: 20110211 Owner name: BANK OF NEW YORK MELLON TRUST, NA, AS NOTES COLLAT Free format text: SECURITY AGREEMENT;ASSIGNOR:AVAYA INC., A DELAWARE CORPORATION;REEL/FRAME:025863/0535 Effective date: 20110211 |
|
AS | Assignment |
Owner name: AVAYA INC., NEW JERSEY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NORTEL NETWORKS LIMITED;REEL/FRAME:026370/0879 Effective date: 20110331 |
|
AS | Assignment |
Owner name: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., PENNSYLVANIA Free format text: SECURITY AGREEMENT;ASSIGNOR:AVAYA, INC.;REEL/FRAME:029608/0256 Effective date: 20121221 Owner name: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., P Free format text: SECURITY AGREEMENT;ASSIGNOR:AVAYA, INC.;REEL/FRAME:029608/0256 Effective date: 20121221 |
|
AS | Assignment |
Owner name: BANK OF NEW YORK MELLON TRUST COMPANY, N.A., THE, PENNSYLVANIA Free format text: SECURITY AGREEMENT;ASSIGNOR:AVAYA, INC.;REEL/FRAME:030083/0639 Effective date: 20130307 Owner name: BANK OF NEW YORK MELLON TRUST COMPANY, N.A., THE, Free format text: SECURITY AGREEMENT;ASSIGNOR:AVAYA, INC.;REEL/FRAME:030083/0639 Effective date: 20130307 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: CITIBANK, N.A., AS ADMINISTRATIVE AGENT, NEW YORK Free format text: SECURITY INTEREST;ASSIGNORS:AVAYA INC.;AVAYA INTEGRATED CABINET SOLUTIONS INC.;OCTEL COMMUNICATIONS CORPORATION;AND OTHERS;REEL/FRAME:041576/0001 Effective date: 20170124 |
|
AS | Assignment |
Owner name: OCTEL COMMUNICATIONS LLC (FORMERLY KNOWN AS OCTEL COMMUNICATIONS CORPORATION), CALIFORNIA Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 041576/0001;ASSIGNOR:CITIBANK, N.A.;REEL/FRAME:044893/0531 Effective date: 20171128 Owner name: AVAYA INTEGRATED CABINET SOLUTIONS INC., CALIFORNIA Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 041576/0001;ASSIGNOR:CITIBANK, N.A.;REEL/FRAME:044893/0531 Effective date: 20171128 Owner name: AVAYA INC., CALIFORNIA Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 029608/0256;ASSIGNOR:THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.;REEL/FRAME:044891/0801 Effective date: 20171128 Owner name: AVAYA INC., CALIFORNIA Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 025863/0535;ASSIGNOR:THE BANK OF NEW YORK MELLON TRUST, NA;REEL/FRAME:044892/0001 Effective date: 20171128 Owner name: VPNET TECHNOLOGIES, INC., CALIFORNIA Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 041576/0001;ASSIGNOR:CITIBANK, N.A.;REEL/FRAME:044893/0531 Effective date: 20171128 Owner name: AVAYA INTEGRATED CABINET SOLUTIONS INC., CALIFORNI Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 041576/0001;ASSIGNOR:CITIBANK, N.A.;REEL/FRAME:044893/0531 Effective date: 20171128 Owner name: AVAYA INC., CALIFORNIA Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 041576/0001;ASSIGNOR:CITIBANK, N.A.;REEL/FRAME:044893/0531 Effective date: 20171128 Owner name: OCTEL COMMUNICATIONS LLC (FORMERLY KNOWN AS OCTEL Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 041576/0001;ASSIGNOR:CITIBANK, N.A.;REEL/FRAME:044893/0531 Effective date: 20171128 Owner name: AVAYA INC., CALIFORNIA Free format text: BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 030083/0639;ASSIGNOR:THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.;REEL/FRAME:045012/0666 Effective date: 20171128 |
|
AS | Assignment |
Owner name: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT, NEW YORK Free format text: SECURITY INTEREST;ASSIGNORS:AVAYA INC.;AVAYA INTEGRATED CABINET SOLUTIONS LLC;OCTEL COMMUNICATIONS LLC;AND OTHERS;REEL/FRAME:045034/0001 Effective date: 20171215 Owner name: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT, NEW Y Free format text: SECURITY INTEREST;ASSIGNORS:AVAYA INC.;AVAYA INTEGRATED CABINET SOLUTIONS LLC;OCTEL COMMUNICATIONS LLC;AND OTHERS;REEL/FRAME:045034/0001 Effective date: 20171215 |
|
AS | Assignment |
Owner name: CITIBANK, N.A., AS COLLATERAL AGENT, NEW YORK Free format text: SECURITY INTEREST;ASSIGNORS:AVAYA INC.;AVAYA INTEGRATED CABINET SOLUTIONS LLC;OCTEL COMMUNICATIONS LLC;AND OTHERS;REEL/FRAME:045124/0026 Effective date: 20171215 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551) Year of fee payment: 4 |
|
AS | Assignment |
Owner name: WILMINGTON TRUST, NATIONAL ASSOCIATION, MINNESOTA Free format text: SECURITY INTEREST;ASSIGNORS:AVAYA INC.;AVAYA MANAGEMENT L.P.;INTELLISIST, INC.;AND OTHERS;REEL/FRAME:053955/0436 Effective date: 20200925 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |
|
AS | Assignment |
Owner name: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT, DELAWARE Free format text: INTELLECTUAL PROPERTY SECURITY AGREEMENT;ASSIGNORS:AVAYA INC.;INTELLISIST, INC.;AVAYA MANAGEMENT L.P.;AND OTHERS;REEL/FRAME:061087/0386 Effective date: 20220712 |
|
AS | Assignment |
Owner name: AVAYA INTEGRATED CABINET SOLUTIONS LLC, NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS AT REEL 45124/FRAME 0026;ASSIGNOR:CITIBANK, N.A., AS COLLATERAL AGENT;REEL/FRAME:063457/0001 Effective date: 20230403 Owner name: AVAYA MANAGEMENT L.P., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS AT REEL 45124/FRAME 0026;ASSIGNOR:CITIBANK, N.A., AS COLLATERAL AGENT;REEL/FRAME:063457/0001 Effective date: 20230403 Owner name: AVAYA INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS AT REEL 45124/FRAME 0026;ASSIGNOR:CITIBANK, N.A., AS COLLATERAL AGENT;REEL/FRAME:063457/0001 Effective date: 20230403 Owner name: AVAYA HOLDINGS CORP., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS AT REEL 45124/FRAME 0026;ASSIGNOR:CITIBANK, N.A., AS COLLATERAL AGENT;REEL/FRAME:063457/0001 Effective date: 20230403 |
|
AS | Assignment |
Owner name: WILMINGTON SAVINGS FUND SOCIETY, FSB (COLLATERAL AGENT), DELAWARE Free format text: INTELLECTUAL PROPERTY SECURITY AGREEMENT;ASSIGNORS:AVAYA MANAGEMENT L.P.;AVAYA INC.;INTELLISIST, INC.;AND OTHERS;REEL/FRAME:063742/0001 Effective date: 20230501 |
|
AS | Assignment |
Owner name: CITIBANK, N.A., AS COLLATERAL AGENT, NEW YORK Free format text: INTELLECTUAL PROPERTY SECURITY AGREEMENT;ASSIGNORS:AVAYA INC.;AVAYA MANAGEMENT L.P.;INTELLISIST, INC.;REEL/FRAME:063542/0662 Effective date: 20230501 |
|
AS | Assignment |
Owner name: AVAYA MANAGEMENT L.P., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: CAAS TECHNOLOGIES, LLC, NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: HYPERQUALITY II, LLC, NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: HYPERQUALITY, INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: ZANG, INC. (FORMER NAME OF AVAYA CLOUD INC.), NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: VPNET TECHNOLOGIES, INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: OCTEL COMMUNICATIONS LLC, NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: AVAYA INTEGRATED CABINET SOLUTIONS LLC, NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: INTELLISIST, INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: AVAYA INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 045034/0001);ASSIGNOR:GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT;REEL/FRAME:063779/0622 Effective date: 20230501 Owner name: AVAYA INTEGRATED CABINET SOLUTIONS LLC, NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 53955/0436);ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT;REEL/FRAME:063705/0023 Effective date: 20230501 Owner name: INTELLISIST, INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 53955/0436);ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT;REEL/FRAME:063705/0023 Effective date: 20230501 Owner name: AVAYA INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 53955/0436);ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT;REEL/FRAME:063705/0023 Effective date: 20230501 Owner name: AVAYA MANAGEMENT L.P., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 53955/0436);ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT;REEL/FRAME:063705/0023 Effective date: 20230501 Owner name: AVAYA INTEGRATED CABINET SOLUTIONS LLC, NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 61087/0386);ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT;REEL/FRAME:063690/0359 Effective date: 20230501 Owner name: INTELLISIST, INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 61087/0386);ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT;REEL/FRAME:063690/0359 Effective date: 20230501 Owner name: AVAYA INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 61087/0386);ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT;REEL/FRAME:063690/0359 Effective date: 20230501 Owner name: AVAYA MANAGEMENT L.P., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 61087/0386);ASSIGNOR:WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT;REEL/FRAME:063690/0359 Effective date: 20230501 |
|
AS | Assignment |
Owner name: AVAYA LLC, DELAWARE Free format text: (SECURITY INTEREST) GRANTOR'S NAME CHANGE;ASSIGNOR:AVAYA INC.;REEL/FRAME:065019/0231 Effective date: 20230501 |